Hinge



E. BOMMER. HINGE.

FILED DEC.23. 1921.

. I INVENT Emu? 30mm 7 AT ORNEY rattan stares entice.

EMIL BOMMER, 0F BROOKLYN, NEW "YORK.

HINGE.

Application filed December 23, 1921. Serial No. 524,372.

To 'aZZ whom it may concern:

Be it. known that I, EMIL BoMMnR, a citizen of the United States, and a resident of Brooklyn, in'the county of Kings and State of New York, have invented certain new and useful improvements in Hinges, of which the following is a specification.

The present invention relates to improv ments in hinges and more particularly to a pintle and its associated parts in which the pintle which extends through the hinge barrel and forms the pivot point about which the hinge leaf swings,'will be so interlocked with. the. leaf ear that extends over the end of the barrel that there will be little likelihood of the occurrence of that relative ro tation between pintle and its cap nut which would result in theseparation of these parts and the consequent disassembly of the hinge structure.

It is eminently to be desired that the pintle, leaf and its'ear and the cap nut be all made to rotate together during the operation of the hinge to avoid the tendency of the cap nut to become loosened. lhe cap nut as is well known, is employed to bind thehinge parts together, and particularly to hold the leaf in proper relation to the barrel and to the pintle and for this reason a continued tight engagement of the cap nut upon pintle is to be desired, v

It is therefore an object oi: the invention to secure this result without entailing any further considerable expense in the manufacture of the hinge and without sacrificingits strength or its ease of operation.

The invention also aims to eifect a simplicity in the method of production of such hinge parts and to secure simplicity in the hinge construction itself, and in general to arrive at the above desirable characteristics in a hinge without adding to the parts therepintle;

Fig. 5 is a section taken onthe line 5 -5 of the invention and in which similar reference characters designate corresponding parts throughout the several views- Fig. 1 is a plan view of a double barrel hinge with one of the pintles and'its cap nut omitted;

2 is a fragmentary elevation barrel with parts shown in section;

Fig. 3 is a cross section'taken on the line 33 in Fig. 2;

Fig. 4 is a fragmentary side view of the of a in Fig. i; and

. Figsifi and 7 are corresponding views of a modified form, Fig. 6 being a: side View of the pintle, and Fig. 7 aplan view of an ear provided with two flattened parts, the ear beingfor a single or'double acting hinge.

Referring more particularly to the draw ings .in Fig. 1 l have illustrated generally a construction of double barrel spring hinge in which 1 designates the central'web con necting the two barrels, above which are placed the ears 2 and 3 of the leaves a and 5, the latter of which is provided with end flanges 6 which embrace the web 1 and the otherleat 4-. Y

In accordance with the invention, the ear at one end of each leaf, such for instance as shown in connection with the ear 3 .in Fig.

1, provided with a perforation 7 having a flat side 8 or other conformation to combine with a similar contour of the outer wall of the pintle 9 to secure an interlocking engagement or a non-rotatable connection between the pintle and the ear. In the construction as shown. the flat side wall 8 of the perforation extends within the circular contour although it might besituated without the circle.

The pintle 9 as shown in Figs. l and 5 is operated upon to impart thereto a flat side "face 10 extending for a suit-able distance from each end thereof inwardly and mergingat the inner end outwardly into the cylindrical outer surface of the pintle which results in the formationot a cam surface 11. This flattening or the pintle in the manner shown and described is preferably secured by swedging. lhe action of swedging produces sharp edges at the sides of the flattened surface. and these edges are rounded off by subsequently subjecting the pintle to the action of a die or other implement for producing the screw threads 12 which are of a desirable pitch to, take intothethreaded socket of the cap nut 13. The cap nut is of any desired ornamental character and is adapted to be screwed tightly againstithe outer face of the ear 8.

The ear 3 thus forms an abutment for the cap nut and by the turning of thenut, the pintle 9 is drawn throughthe barrel without however permitting of its rotationfbe,

causeloflthe l engagement of the lflat side 10f with "the'f flat L wall 8 a of the perforation j .7. Asr the nut l3 istlius ti htened, the cam sur faeefll .willggraduaillyv and by relatively great pressure developed by the screw ac.,

tionlb e drawn up ,intothe perforation 7 and into effectual binding (engagement with the flat side wall 8i.againstfwhi'ch' it frictionally W binds.

The usual Winding .disk 14" is interposed between the end ofthe barrel, indicated at 15in Fig. 2,.and the ear 3, the pintle 9 passing axially through the tamer, I

,It willthus be appreciated that as the hinge leaf '5 swings about the barrel, it will turn with, ittheear 3, andbe'cause- ,of'th'e binding-engagement just described, also the pintlefland its cap nutl13 The three parts" thus rotating. in unison-will consequently not induce any relative movement which might. causethe backing of thenut 13 off: the pintle] threads 12. I

,,A single actof swedg ingfmay sufiice to]. pro duceflthe flat side, face 10 on the pintle and, the sloping or curved surface 11, and thescrew threading, is preferably accom plished after the swedging action in order tocompensate for any inequalities produced thereby and to' smooth the sharp edges left by theb'swedging. This swedging may be accomplished at avcost which is negllgible and. the resultantarticle is not weakened in any particular and forms a. strong and binding engagement between the several parts.

Other means than swedging may be found advantageous. .Also, instead of having the flattened side at only one point it may be on opposite points, asshown in Figures (Sand 7, which has an advantage in saving die work and favors the screw threading dies when, cutting the threads in giving a balanced cut. This flattening either at one or more sides may. beprovided at one end or both ends of the pintle.

I have herein disclosed an embodiment of the invention applied to a singlebarrel hinge which I have found to be very satisfactory and serviceable in use, and a method of producing hinge parts, but it will be nevertheless understood that the invention is equally applicable for use in double barrel hinges and the device is susceptible of many modifications in its. structural form, such,

, for instance,.as the use of a perforation and pintle havingmore than one flat Wall ar- ..fairly.embodied within the spirit and scope rangement of its several parts, and in the steps ,andtl processes {of its mannfacture, and I accordingly'reserve the'privil ege of adopting all such legitimate changes as may be of the invention as claimed.

What is claimed is 1. T he combination With a hinge barrel, ofa leaf havinga laterally offset ear extending over the end ofthebarrel and-provided 7 with an irregular aperture, ja' pintlefpassing through; Q said, barrel and ear and" provided with a "threaded end extending beyond said, I ear"? and "with a flattened 1 shoulder adjacent saidfthreaded end engaging a corresponding '2:

wallof the apertureflof said ea'r and a' capQ nut having a threadedengagement with the projecting end of said" pintle andbearing 1 at its' nnerend ,against said can.

3 A hinge co prising barrel, a leaf having an ear e ttending'over one end of said barrel, said ear having aperforfationwith a flat wall, a pintle extending through: said barrel and the perforation of said' can and having a threaded end provided with a flat side terminatingin a cam'lsurface at the inner end of saidjfiat side, and means adapted to frictionally bind the pintleinto' locked Contact against the wall of the ear perforation. v a l In aliinge having a barrel, alea f having alaterally extending ear bearingupon the end of the barrel and provided with an irregular aperture, and a cap nut having a threaded recess, means for locking said leaf and cap nut together consisting ofa pintle extending through said barreland ear, andprovidedwith a threaded end, one side of, said threaded end being mutilated to form a flat surface terminating .in an inclined shoulder, the inclined shoulder engaging a straight edge of the apertureof said ear, and the threaded end of said pintle engaging, thethreaded recess 'ofs'aidfcap nut to firmly bind said ear and cap nut together.

5 The herein described'method for term- 1.

0 ing hinge parts which'consists L in initially swedging a hinge pintle, and subsequently screw threading the swedged portion of the pintle to round off the sharp edges caused by the swedging action. I30

6. The herein described method for forming hinge parts which consists in initially swedging a blank pintle at the ends thereof and in tapering ofi the inner edges of the swedged portion into the cylindrical surface of the pintle, and subsequently screw threading the swedged portions to remove the sharp edges resulting from the action of the swed e.

In testimony that I claim the foregoing 10 as my invention I have signed my name hereunder.

EMIL BOMMER. 

